Problem with textures

[Wither1945]

I have the same problem, I’m trying to port the MS-1 tank from blender to UE4. In blender everything is fine with textures and polygons, but in UE4 the outer part of the polygons partially disappears and looks like X-Ray mode

[L1z4rD89]

Hey @Wither1945

that could be caused by wrong orientated faces on your mesh:

How to Flip Face Orientation | Flip Normals | Blender 2.9 Tutorial